1. Combination valve of YZH type oil pressure unit
2. DQF23 Electric Ball Valve
3. Model ZBQF self-retaining ball valve
4. DDF type self-retaining automatic butterfly valve
5. TDS-W Intelligent Digital Display Temperature Controller
6. Model TDS-X intelligent multi-point patrol tester
7. TDS-D frequency signal computer speed signal device
8. TDS-C Tooth Disc Signal Computer Speed Measuring and Controlling Device
9. TDS-K Dual Channel Computer Speed Measuring and Controlling Device
10. TDS-B Two-channel Swing Computer Measuring and Controlling Device